FAA has conceded an Aug. 15 air traffic control (ATC) system failure affecting hundreds of flights was rooted in a software upgrade to its ATC computer system. The system failure at FAA’s high-altitude en route center in Leesburg, Virginia, is being attributed by FAA to “a recent software upgrade” to Lockheed Martin’s En Route Automation Modernization (ERAM) system. ERAM earlier this year replaced the En Route Host computer system that manages traffic in US airspace ...

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